Fleisch



(No Model.) 2 Sheets-Sheet 1 E. SOHWEINEPLEISOH.

APPARATUS FOR GRINDING CARD TEETH. No. 598,015. Patented Jan. 25, 1898.

QQ QAM (,No Model.) 2 Sheets-Sheet 2.

E. SGHWEINEPLEISGH. APPARATUS FOR GRINDING CARD TEETH.

No. 598,015. Patented Ja-Il. 25,1898.

PATENT Fries.

ERNST SGHWEINEFLEISOH, OF MUHLHAUSEN, GERMANY.

APPARATUS FOR onmomo CARD-TEETH.

SPECIFICATION forming part of Letters Patent No. 598,015, dated January 25, 1898. Application filed May 28, 1897' Serial No. 638,586.. (No model.)

T0 at whom it may concern:

Be it known that I, ERNST SCHWEINE- FLEISCH, a subject of the Emperor of Germany, residing at Mt'ihlhausen, in the Empire of Germany, have invented certain new and useful Improvements in or Relating to Apparatus for Grinding Card-Teeth, of whichthe following is a specification.

The present invention relates to apparatus for grinding card-teeth; and it consists in the combination of devices hereinafter described and claimed.

Figure 1 shows in cross-section the grinding-disk and a feed-roller with card-clothing thereon. Fig. 2 shows the grooved grindingdisk in side elevation. Fig. 3 is an elevation of the grinding-machine. Fig. 4 'is a face view of a disk carrying a series of movable pins for applying the card-teeth to the grinding-disk. Fig. 5 is a view of the pin-carryin g disk and a cam-guide for the pins. Fig. 6 is a face view of the cam. Fig. 7 is a detail View of a portion of the pin-carrying disk.

The machine comprises a feed-roller I), over which is guided the card-clothin g a,which may be formed, for instance, as an endless band. The teeth a of this card-clothing are applied successively in transverse series or rows against an emery or like disk f, provided with grooves g and supported slightly behind or to one side of the rollerb, rotating in the same direction, but at a much higher speed. The teeth are applied to this disk f by means of pins d, which rotate at the same speed as the teeth a and are horizontally adjustable on a disk? and at the sametime are capable of being raised radially. The teeth will then be ground at their free ends to the shape of an arrow or bevel-edged point, their extreme points be ing slightly bent inward, Figs. 1 and 2. During the rotary movement of the pins (1 the rectilinear horizontal movement of said pins takes place in such manner thatthe advance movement is gradual and the return movement very sudden, and at the same time the pins are radially raised in places where the teeth a are to be applied against the grindin g-disk f, Fig. 1", from :otoy. After the raised teeth have passed the grinding-diskthat is to say, after they have been ground'the pins cl suddenly return into a position in which they do not effect or engage with the teeth 0 at Fig. 1, and travel around until they reach again their operative position at 00, when they are caused to penetrate into another transverse series of teeth and to rise as before.

' The grinding-disk f as well as the feedroller 1) are driven from the driving-shaft of the apparatus. On this driving-shaft 1 may be arranged, for instance, a large driving pulley 2 and a considerably smaller pulley 3. The large pulley 2 is connected with a much smaller one, 5, on the shaft 4 of the grindingdisk f, so that the latter is rotated at a great speed. The feed-roller b, for which only a small number of revolutions is required, is driven by a large pulley 6, connected to a much smaller pulley 3 on the driving-shaft 1. The pins cl are arranged in a circle on a' disk 7, secured on the continuation 8 of the spindle of the feedroller b. This disk 7, with the pins d, is shown in Fig. 4 in front elevation, and in Fig. 5 in longitudinal section on a slightly-enlarged scale.

9 is a cam mounted in the frame 1U of the machine, said cam being concentric with the feed-roller l) and at the same time forming a bearing for the continuation 8 of the spindle of the feed-roller, the cam being shown in Fig. 6 in front elevation.

In consequence of the disk 7, carrying the pins 01, being arranged on the continuation 8 of the spindle of the feed-roller b said disk rotates with the same speed as the latter.

The horizontal reciprocating movement of the pins (1 with a gradual advance and sudden withdrawal is efiected by the free heads, preferably ball-shaped, of said pins sliding over the cam 9 and by helical springs 12 being placed between the heads 11 of the pins (1 and the disk 7, said springs acting on the pins cl. hen the disk 7 is turned in the direction indicated by the arrow, the pins (1, having arrived at 0;, Figs. 1, 4, and 6, will be gradually pushed forward between the transverse series of the card-teeth, Figs. 1 and 3, tillthey are fully extended, owing to their heads 11 rising on the cam-surface 13 of the cam 9. At the same time the pins 01 are raised radially and press the teeth to be ground against the disk f by means of the inclined surfaces 1a of the rear part 15 of the pins. The inclined surfaces lat are arranged on corresponding surfaces of holes in the disk 7 and are constantly pressed toward'the middle of the disk by springs 16, provided with washers 17, arranged so as to be radially movable. The washers 17 are provided with guide-studs 18, as shown.- After the heads 11 of the pins have reached, at the point y Fig. 6, the end of the suddenly-falling cainsurface 13 they fall back suddenly, owing to the action of the springs 12, Figs. 3 and 5, and thus the springs 16 also return to their original position and press upon the re duced portion of the bolt 15, Fig. 5. The pins d are in this case cranked inward at a right angle in order to enable them to be suf fioiently supported in the disk 7, which is made aswide as possible, as, owing to the small size of the card-teeth, they can be arranged between the series of teeth only in a small circle.

The disk 7 may carry guide-studs 19, extended through slots 20 in the cranked portions of the pins d to assist in supporting them when pushed outward by the cam.

What I claim as my invention is 1. In apparatus for grinding card-teeth carried on an endless belt or foundation, the combination with the feed-roller, of a guidedisk revolving with said roller, and springcontrolled pins passing through said disk and adapted to carry and feed forward the cardteeth, said pins being successively pressed forward and raised as they revolve, by means of a cam-guide, substantially as described.

2. In apparatus of the character described for grinding card-teeth, the spring-controlled cranked pins, such as 01, passing through holes having inclined. surfaces in the disk 7,

in combination with a stationary cam-guide such as 9, substantially as described.

3. In apparatus of the character described, for grinding card-teeth, the combination of the disk such as 7, springs 16 and washer 17 nesses.

ERNST SCHWEINEFLEISCH. \Vitnesses:

EMILY O. MILLER, FAURE Moons. 

